Breaking News: Explosion underground?



19:05 9/29/2011(JST) ,there was an earthquake near Fukushima plants.

Scale 5+


Now there are some aftershocks still.

Strange points

  • 1) Though it was a major earthquake,it was scale 5+ only around Fukushima nuc plants.
  • 2) According to Japan Meteorological Agency,the epicenter was “very shallow”.They can’t even specify how deep it was.

  • 3) Though Fukushima city is in the same prefecture,it was only scale 1 there.

  • 4) A lot of the people heard loud brontide,which is rare for normal earthquake.

Unconfirmed info (info from Twitter)

  • 1) The epicenter is right under Fukushima plants.
  • 2) From the live streaming video,sometimes you see flash from the buildings.

  • 3) From the live streaming video,steam is coming up from around reactor 4.


  • 1) Radiation level is increasing.
  • In Futabayama area, 21.48 uSv/h @9/21 → 24.65 uSv/h @9/29 19:01
  • 2) Unusual amount of helicopters and airplanes are flying around in Fukushima. (hovering near Ishimori,Kamiya,etc..)

From viewing all those reports, this earthquake seems to be something usual.

Considering the fact that melted fuel rods are sinking about 17m deep in the ground, it is possible to think the last earthquake was a hydrovolcanic explosion caused by nuclear fuel touching the underground water vein.

teatree_ft 古田 真人
破局だよ RT あまり考えたくないけど、メルトアウトした燃料と地下水が接触して地下で再臨界だと考えるのが妥当かなと?ふくいち近辺で震度5強だけど隣県で震度4が存在しなかったんです。どう考えても不思議ですよね。

“It’s catastrophic. I don’t even want to imagine,but it might have been some kind of explosion of meltouted fuel rods touching underground vein.
It was scale 5+ just around the plants but no scale 4 class of earthquake detected in other prefectures.”

Tomorrow,Japanese government is lifting the mandatory evacuating area.

About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.


September 2011